Finding the Fourth Proportional to 993,159.70, 1,489,739.55 and 638,574.10
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Solution
The fourth proportional to 993,159.70, 1,489,739.55 and 638,574.10 is: 957,861.15
Step by Step Solution
- Step 1: Write the proportion equation
993,159.70 : 1,489,739.55 = 638,574.10 : x - Step 2: Convert to fraction form
993,159.70/1,489,739.55 = 638,574.10/x - Step 3: Cross multiply
993,159.70x = 1,489,739.55 × 638,574.10 - Step 4: Simplify right side
993,159.70x = 951,309,092,375.66 - Step 5: Solve for x
x = 951,309,092,375.66/993,159.70 - Step 6: Final answer
x = 957,861.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.